Are you saying the only way to set the current is with an app? The Tesla HPWC has internal dip switches to set the maximum current. Without seeing a schematic I can only guess what they are doing.
Program the current with the EVSE not connected to the car. The car is only going to ask the EVSE once what the maximum value is for a given connection. If it is changed after that the car won't know it was changed. The question is does the EVSE have high current limiters or just a logic system that tells the car what the maximum is but has no way to enforce the current draw maximum? My guess, as a retired electrical/computer engineer, is the latter. The HPWC does it with dip switches so it can't be changed dynamically.
@murphyS90D , you are correct for the Gen2 Tesla wall charger but the Gen3 does not have a physical switch anymore. The configuration of things like maximum power is done through a web page. This is why electricians insist on putting a 60A breaker, to support the potential maximum 48A delivery... because the configuration page is technically accessible by the end user.
I don't know how the ChargePoint works but it seems to be a web page too?
I otherwise agree with you, obviously, about setting the maximum on the charger with nothing plugged
Yes the ChargePoint does not have any physical switch to regulate current. So it needs to be powered on and then can be changed thorough the app. I changed it to max 40A (breaker current, the app has options for 40A and 50A), and then connected to the car. The breaker tripped again within couple seconds.